Closure and nozzle system for container for air-curable material

Abstract

An improved closure and nozzle system for containers for air-curable materials such as cartridges for sealant and caulking compounds is disclosed. A container such as a caulking cartridge is provided with a threaded neck for attachment of a correspondingly threaded nozzle having a tapered tip portion designed to be cut off to provide a desired orifice size. A cap having a snap-fit ring is designed to mate with a corresponding snap-fit ring on the nozzle short of the tip and also having a threaded external portion designed to mate with the container neck so that the cartridge can be resealed after opening.

That which is claimed is: 
     
       1. In a closure system for a container for air-curable materials, said container comprising a threaded neck for attachment of a dispensing nozzle having threads adapted to mate with the threads on said neck, said nozzle further including a tapered normally closed tip portion designed to be cut off at a point along a portion of its length to provide a desired nozzle orifice size, the improvement which comprises a hollow cap having an external threaded portion also designed to mate with the threads on said neck of said container and having interconnection means formed on an interior surface thereof designed to cooperate with corresponding interconnection means formed on the exterior surface of said nozzle at a point short of the nozzle portion which is designed to be cut off, whereby the cap can be affixed over the nozzle during short term nonuse or in place of the nozzle can be threadedly attached to the neck of said container during long term nonuse to seal the contents against exposure to air thereby extending the useful life of the remaining contents of the container. 
     
     
       2. The improvement defined in claim 1 wherein the interconnection means on said cap and corresponding interconnection means on said nozzle consist of snap-fit rings formed on corresponding surfaces of the cap and nozzle.